Metric Hex Bolts & Hex Screws with Reduced Body Diameters
Dimensions of Metric Hex Bolts & Hex Screws with Reduced Body Diameters
| Nominal Diameter, D, and Thread Pitch | Shoulder Diameter Ds, | Body Diameter Dsi, | Shoulder Length, Lsh | |||
|---|---|---|---|---|---|---|
| Max | Min | Max | Min | Max | Min | |
| Metric Formed Hex Screws (ANSI B18.2.3.2M-1979, R1989) | ||||||
| M5 x 0.8 | 5.00 | 4.46 | 4.46 | 4.36 | 3.5 | 2.5 |
| M6 x 1 | 6.00 | 5.82 | 5.39 | 5.21 | 4.0 | 3.0 |
| M8 x 1.25 | 8.00 | 7.78 | 7.26 | 7.04 | 5.0 | 4.0 |
| M10 x 1.5 | 10.00 | 9.78 | 9.08 | 8.86 | 6.0 | 5.0 |
| M12 x 1.75 | 12.00 | 11.73 | 10.95 | 10.68 | 7.0 | 6.0 |
| M14 x 2 | 14.00 | 13.73 | 12.77 | 12.50 | 8.0 | 7.0 |
| M16 x 2 | 16.00 | 15.73 | 14.77 | 14.50 | 9.0 | 8.0 |
| M20 x 2.5 | 20.00 | 19.67 | 18.49 | 18.16 | 11.0 | 10.0 |
| M24 x 3 | 24.00 | 23.67 | 22.13 | 21.80 | 13.0 | 12.0 |
| Metric Hex Flange Screws (ANSI B18.2.3.4M-1984) | ||||||
| M5 x 0.8 | 5.00 | 4.82 | 4.46 | 4.36 | 3.5 | 2.5 |
| M6 x 1 | 6.00 | 5.82 | 5.39 | 5.21 | 4.0 | 3.0 |
| M8 x 1.25 | 8.00 | 7.78 | 7.26 | 7.04 | 5.0 | 4.0 |
| M10 x 1.5 | 10.00 | 9.78 | 9.08 | 8.86 | 6.0 | 5.0 |
| M12 x 1.75 | 12.00 | 11.73 | 10.95 | 10.68 | 7.0 | 6.0 |
| M14 x 2 | 14.00 | 13.73 | 12.77 | 12.5 | 8.0 | 7.0 |
| M16 x 2 | 16.00 | 15.73 | 14.77 | 14.5 | 9.0 | 8.0 |
| Metric Hex Bolts (ANSI B18.2.3.5M-1979, R1989) | ||||||
| M5 x 0.8 | 5.48 | 4.52 | 4.46 | 4.36 | 3.5 | 2.5 |
| M6 x 1 | 6.48 | 5.52 | 5.39 | 5.21 | 4.0 | 3.0 |
| M8 x 1.25 | 8.58 | 7.42 | 7.26 | 7.04 | 5.0 | 4.0 |
| M10 x 1.5 | 10.58 | 9.42 | 9.08 | 8.86 | 6.0 | 5.0 |
| M12 x 1.75 | 12.70 | 11.30 | 10.95 | 10.68 | 7.0 | 6.0 |
| M14 x 2 | 14.70 | 13.30 | 12.77 | 12.50 | 8.0 | 7.0 |
| M16 x 2 | 16.70 | 15.30 | 14.77 | 14.50 | 9.0 | 8.0 |
| M20 x 2.5 | 20.84 | 19.16 | 18.49 | 18.16 | 11.0 | 10.0 |
| M24 x 3 | 24.84 | 23.16 | 22.13 | 21.80 | 13.0 | 12.0 |
| Metric Heavy Hex Bolts (ANSI B18.2.3.6M-1979, R1989) | ||||||
| M12 x 1.75 | 12.70 | 11.30 | 10.95 | 10.68 | 7.0 | 6.0 |
| M14 x 2 | 14.70 | 13.30 | 12.77 | 12.50 | 8.0 | 7.0 |
| M16 x 2 | 16.70 | 15.30 | 14.77 | 14.50 | 9.0 | 8.0 |
| M20 x 2.5 | 20.84 | 19.16 | 18.49 | 18.16 | 11.0 | 10.0 |
| M24 x 3 | 24.84 | 23.16 | 22.13 | 21.80 | 13.0 | 12.0 |
| Metric Heavy Hex Flange Screws (ANSI B18.2.3.9M-1984) | ||||||
| M10 x 1.5 | 10.00 | 9.78 | 9.08 | 8.86 | 6.0 | 5.0 |
| M12 x 1.75 | 12.00 | 11.73 | 10.95 | 10.68 | 7.0 | 6.0 |
| M14 x 2 | 14.00 | 13.73 | 12.77 | 12.50 | 8.0 | 7.0 |
| M16 x 2 | 16.00 | 15.73 | 14.77 | 14.50 | 9.0 | 8.0 |
| M20 x 2.5 | 20.00 | 19.67 | 18.49 | 18.16 | 11.0 | 10.0 |
- a Shoulder is mandatory for formed hex screws, hex flange screws, and heavy hex flange screws. Shoulder is optional for hex bolts and heavy hex bolts.
- All dimensions are in millimeters.